混合汉密尔顿模拟激发动力学
Lingyun Wan1, Jie Liu2, Zhenyu Li1,2
1Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
The journal of physical chemistry letters
|November 1, 2024
概括
本研究介绍了一种混合量子算法,结合了变量方法和卡顿分解,用于精确的,固定深度的时间依赖系统的哈密尔顿模拟,使近期处理器上的实际量子动态模拟成为可能.
科学领域:
- 量子计算是一种量子计算.
- 量子模拟的量子模拟
- 计算物理 计算物理
背景情况:
- 哈密尔顿模拟对于量子计算应用至关重要.
- 对于时间依赖的哈密尔顿数的Trotter-Suzuki方法导致近期量子处理器不切实际的电路深度.
- 卡顿分解 (CD) 提供了固定深度电路,但仅限于时间独立的哈密尔顿式.
研究的目的:
- 为了将基于CD的哈密尔顿模拟对时间依赖系统进行概括.
- 开发一种混合算法,将CD和变量量子算法结合起来.
- 为了使时间依赖系统能够准确,固定的深度量子动态模拟.
主要方法:
- 一种混合方法,分别对待哈密尔顿的时间依赖和独立部分.
- 使用变量量子算法对时间依赖的组件.
- 采用基于CD的哈密尔顿模拟用于时间独立的组件.
- 确保用于混合模拟的固定深度量子电路.
主要成果:
- 开发的混合算法实现了对时间依赖的哈密尔顿模拟的高精度.
- 该方法只需要固定深度的量子电路,因此适用于近期设备.
- 精确的光谱获得了自旋和分子系统,这些系统受到三角洲电场的影响.
结论:
- 基于CD的一般化哈密尔顿模拟算法有效地解决了时间依赖的系统.
- 这种混合方法为量子动态模拟提供了一种实用而准确的方法.
- 该算法显示出对研究量子系统对外部场的反应具有前景.
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